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Introducing The High Temperature Hot Water Heat Pump

By Nordic

September 06, 2016

Products

hot water heat pump
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In our 30 years of operation, Maritime Geothermal Ltd. has become very good at designing and building traditional water to water heat pumps that produce 120°F (48°C) hot water. For decades these heat pumps have done a very good job at producing hot water for radiant in-floor heating.

But often we have been approached by homeowners who need water that is hotter. These homeowners may have hot water baseboard heating or cast iron radiators, and they were looking for a heat pump that could produce significantly hotter water. Unfortunately, we did not have a heat pump that could produce water hot enough to guarantee a homeowner’s comfort with these distribution systems.

Until now.

Introducing the new WC Series high-temperature hot water heat pump, with hot water output up to 160°F (70°C) from a geothermal ground loop or open water well.

hot water heat pump

Maritime Geothermal Ltd. has been manufacturing typical water to water heat pumps for years, and we tackled the design of the WC Series in response to the many inquiries we’ve received from homeowners, geothermal professionals, and architects and engineers.

This new heat pump was no small undertaking, fortunately, we had the skills and know-how on our team to make this heat pump a reality. We carefully designed, developed and tested this heat pump over the past year, and here is what our Product Design engineer, Dan Rheault, has to say about it:

Dual Refrigerant System

The WC Series is able to produce hot water up to 160°F (70°C) from source temperatures as low as 25°F (-4°C). It accomplishes this by using two refrigeration circuits, one with R410a and one with R134a refrigerant. The two refrigerant circuits allow this heat pump to accomplish the impressive temperature lifts required for high temperature heating.

Smart Operation

The WC Series heat pump is equipped with our Gen2 control board. This control board has USB connectivity and is equipped with data logging. It is also BACnet capable and integrates easily with building management systems. The control board has built-in aqustat functionality so no external probes are required.

The Gen2 control board also operates the heat pump’s outdoor reset functionality. The outdoor reset feature only turns up the buffer tank temperature when outdoor temperatures drop, minimizing the amount of work the heat pump needs to perform to satisfy the home’s cooling load. This maximizes the heat pump coefficient of performance (COP) at all times.

Optional Dedicated Domestic Hot Water

The WC Series is also offered in a double wall heat exchanger version for dedicated domestic hot water heating. This option is available in sizes from 1.5 to 6 nominal tons. The 1.5 ton option is perfect for the average four-person family looking for a dedicated domestic hot water heat pump. The larger sizes are suited to domestic hot water production for commercial applications.

Highly Efficient

The WC Series has an average heat pump COP of between 2.1 and 2.8, depending on the temperature lift required. The lower the temperature of water required, the higher the COP. Fortunately, the built-in outdoor reset function will also ensure the heat pump is outputting the lowest temperature of water possible, continually maximizing your heating efficiency.

The WC Series heat pump is available in sizes 1.5 to 6 nominal tons. This unit is non-reversing so cannot provide air conditioning, and has no desuperheater.

Learn more about how heat pumps can help you become free from fossil fuels, download our Ebook: Avoiding Fossil Fuels.

To learn more about the WC Series hot water heat pump, visit the product page to download the manual and brochure, or contact us for pricing and availability.

Comments

  1. Reply

    Barry Zwicker

    October 01, 2016

    Minor mistake in second paragraph under
    “Smart Operation”. The “in” below can be deleted.

    “the buffer tank temperature in when”

    • Jordann Brown

      October 03, 2016

      Thanks, Barry, we’ve made that small edit.

  2. Reply

    Scott whitty

    August 16, 2017

    Is this available to run on Municipal Water Supply?

    • Jordann Brown

      August 17, 2017

      Most municipalities have bylaws against using a municipal water supply for water to water heat pumps. Even if there are no bylaws in your area, if your water is metered it would be cost prohibitive due to the large volume of water required. These units are designed to work with an open water well or closed geothermal ground loop.

  3. Reply

    Scott whitty

    September 13, 2017

    Booo Lol thanks anyways!

  4. Reply

    Daniel Noll

    August 31, 2018

    Very interesting read. Looking to venture into sales, installations and maintenance in Perth, Western Australia later this year. Very interested in your products.

  5. Reply

    Greg Weiss

    June 06, 2019

    Our church is looking at installing a High temperature Geo System. We want to have it in before the next heating system. We are interested in a water to water with a closed looping system. We have the old cast iron radiators and want to keep them in our church. Please send me literature and the closest dealer in the 54736 area code.

    • Jordann Brown

      June 06, 2019

      Hi Greg,
      I’d recommend downloading our Ebook, 6 Ways Geothermal Benefits Your Commercial Building: http://content.nordicghp.com/6-ways-geothermal-energy-will-benefit-your-commercial-building
      Depending on the hot water temperature you need, you’ll either use a standard water to water heat pump: https://www.nordicghp.com/product/nordic-products/liquid-source-heat-pumps/liquid-to-water/w-series-commercial/
      Or high-temperature heat pump: https://www.nordicghp.com/product/nordic-products/high-temp-water-to-water/wh-series/
      We don’t seem to have a Nordic installer near you, but any IGSHPA certified installer can install our heat pumps.

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